French Prime Minister Manuel Valls called for more action from the European Central Bank to lower the value of the euro, amid concerns the 18-nation region might be headed toward deflation.

“The monetary policy has started to change,” Valls said today in a speech made at the Socialist Party’s summer school in La Rochelle, France. While he called the ECB’s package of measures taken in June a “strong signal,” he also said that “one will have to go even further.”

Inflation in the currency bloc slowed to 0.3 percent in August from a year earlier, the lowest since 2009, compared with an ECB target for price growth of just under 2 percent. Draghi has said that the ECB stands ready to embark on unconventional measures such as broad-based asset purchases to avoid a deflationary spiral of falling prices and households postponing their spending plans.

In his speech, Draghi also called for complementary action on a European level and “a large public investment program.” German Chancellor Angela Merkel was disgruntled with the comments and called Draghi to ask if the ECB had changed course on austerity, Der Spiegel reported, without saying where it got the information.

The magazine’s assertion that Merkel “demanded answers” from Draghi “in no way corresponds to the facts,” Merkel spokesman Steffen Seibert said in a text message.